From: Shaohua Li Date: Fri, 27 May 2011 06:59:39 +0000 (+0800) Subject: x86/PCI: select direct access mode for mmconfig option X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0aba496fc820d7c36775f2fd0ef81994e1af67a8;p=linux-beck.git x86/PCI: select direct access mode for mmconfig option Direct access is needed in mmconf mode too. There are two reasons: 1. we need it to access first 256 bytes. We have bug before that using mmconf to access pci config space hangs system (when resizing BARs), so we use type1 config for legacy config space. 2. when doing mmconfg bar checking, we need access ACPI _CRS, which might access PCI config space. Signed-off-by: Shaohua Li Signed-off-by: Jesse Barnes --- diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index da349723d411..5b3e6ec4703d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1905,7 +1905,7 @@ config PCI_BIOS # x86-64 doesn't support PCI BIOS access from long mode so always go direct. config PCI_DIRECT def_bool y - depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY || PCI_GOOLPC)) + depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY || PCI_GOOLPC || PCI_GOMMCONFIG)) config PCI_MMCONFIG def_bool y